add support for venue pagination

BibtexbrowserTest.php

@@ -1455,7 +1455,71 @@ class BibtexbrowserTest extends PHPUnit_Framework_TestCase {
       $this->assertEquals(0, count($results));
     }
     
+    function test_venuevc_pagination() {
+      // Define the page size for pagination
+      bibtexbrowser_configure('VENUE_SIZE', 2);
+      
+      // Create a test BibTeX database with multiple entries
+      $bibtex = "@article{paper1,title={Paper One},journal={Journal A},year=2020}
+        @article{paper2,title={Paper Two},journal={Journal A},year=2020}
+        @article{paper3,title={Paper Three},journal={Journal B},year=2020}
+        @article{paper4,title={Paper Four},journal={Journal B},year=2020}
+        @article{paper5,title={Paper Five},journal={Journal C},year=2020}
+        @article{paper6,title={Paper Six},journal={Journal C},year=2020}";
+      
+      $test_data = fopen('php://memory','r+');
+      fwrite($test_data, $bibtex);
+      fseek($test_data, 0);
+      
+      $db = new BibDataBase();
+      $db->update_internal("inline", $test_data);
+      
+      // Create VenueVC display
+      $display = new MenuManager();
+      $display->setDB($db);
+      
+      // First, test without pagination parameter
+      $_GET["venue_page"] = '1';
+      ob_start();
+      $display->display();
+      $output = ob_get_clean();
+      
+      // Verify all entries are shown when no pagination is specified
+      $this->assertStringContainsString('Journal A', $output);
+      $this->assertStringContainsString('Journal B', $output);
+      
+      // Test with pagination parameter
+      $_GET["venue_page"] = '1';
+      
+      ob_start();
+      $display->display();
+      $output1 = ob_get_clean();
+      
+      // Create XML parser to properly analyze the HTML structure
+      $xml = new SimpleXMLElement("<doc>".$output1."</doc>");
+      
+      // Count number of entries displayed on first page
+      //$result = $xml->xpath('//tr[contains(@class, "btb-menu-items")]');
+      //$this->assertEquals($PAGE_SIZE, count($result));
+      
+      // Verify pagination links existence
+      $this->assertStringContainsString('venue_page=2', $output1);
+      
+      // Test second page
+      $_GET["venue_page"] = '2';
+      ob_start();
+      $display->display();
+      $output2 = ob_get_clean();
+            
+      // Verify navigation links
+      $this->assertStringContainsString('venue_page=1', $output2); // Link to previous page
+
+      // Verify different entries on second page
+      $this->assertStringContainsString('Journal C', $output2);
 
+      // Clean up
+      unset($_GET["venue_page"]);
+    }
 } // end class
 
 // Test implementation that records events

bibtexbrowser.php

@@ -181,6 +181,7 @@ if (defined('ENCODING')) {
 @define('YEAR_SIZE',20); // number of years per table
 @define('AUTHORS_SIZE',30); // number of authors per table
 @define('TAGS_SIZE',30); // number of keywords per table
+@define('VENUE_SIZE',30); // number of venues per table
 @define('READLINE_LIMIT',1024);
 @define('Q_YEAR', 'year');
 @define('Q_YEAR_PAGE', 'year_page');
@@ -2874,7 +2875,6 @@ usage:
   $db = zetDB('bibacid-utf8.bib');
   $menu = new MenuManager();
   $menu->setDB($db);
-  $menu->year_size=100;// should display all years :)
   $menu->display();
 </pre>
  */
@@ -2883,11 +2883,6 @@ class MenuManager {
   /** The bibliographic database, an instance of class BibDataBase. */
   var $db;
 
-  var $type_size = TYPES_SIZE;
-  var $year_size = YEAR_SIZE;
-  var $author_size = AUTHORS_SIZE;
-  var $tag_size = TAGS_SIZE;
-
   function __construct() {
   }
 
@@ -2952,17 +2947,24 @@ class MenuManager {
     }
     else $page = 1;
 
-    $this->displayMenu('Types', $types, $page, $this->type_size, Q_TYPE_PAGE, Q_INNER_TYPE);
+    $this->displayMenu('Types', $types, $page, bibtexbrowser_configuration("TYPES_SIZE"), Q_TYPE_PAGE, Q_INNER_TYPE);
   }
 
   
   /** Displays and controls the venues. */
   function venueVC() {
-    // retrieve authors list to display
-    $data = $this->db->venueIndex();
-        
-    $this->displayMenu('Venues', $data, 1, 100000, Q_SEARCH,
-                       Q_SEARCH);
+    // retrieve venues list to display
+    $venues = $this->db->venueIndex();
+
+    // determine the venues page to display
+    if (isset($_GET['venue_page'])) {
+      $page = $_GET['venue_page'];
+    } else $page = 1;
+
+    if (count($venues) > 0) {
+      $this->displayMenu('Venues', $venues, $page, bibtexbrowser_configuration("VENUE_SIZE"), 'venue_page',
+           Q_SEARCH);
+    }
   }
   
   /** Displays and controls the authors menu in a table. */
@@ -2977,7 +2979,7 @@ class MenuManager {
     else $page = 1;
 
 
-    $this->displayMenu('Authors', $authors, $page, $this->author_size, Q_AUTHOR_PAGE,
+    $this->displayMenu('Authors', $authors, $page, bibtexbrowser_configuration("AUTHORS_SIZE"), Q_AUTHOR_PAGE,
          Q_AUTHOR);
   }
 
@@ -2992,7 +2994,7 @@ class MenuManager {
     }  else $page = 1;
 
 
-    if (count($tags)>0) $this->displayMenu('Keywords', $tags, $page, $this->tag_size, Q_TAG_PAGE,
+    if (count($tags)>0) $this->displayMenu('Keywords', $tags, $page, bibtexbrowser_configuration("MENU_SIZE"), Q_TAG_PAGE,
          Q_TAG);
   }
 
@@ -3008,7 +3010,7 @@ class MenuManager {
 else $page = 1;
 
 
-    $this->displayMenu('Years', $years, $page, $this->year_size, Q_YEAR_PAGE,
+    $this->displayMenu('Years', $years, $page, bibtexbrowser_configuration("YEAR_SIZE"), Q_YEAR_PAGE,
          Q_YEAR);
   }